*{
  margin:0px;
  padding:0px;
  outline: none/*轮廓*/
}
a{
  text-decoration: none;/*不画线，并删除任何现有的装饰*/
  color:#000;
}
/* 解决 幽灵空白节点 */
img{
  width:100%;
  height:auto;
  display: block}
button{
  cursor: pointer;/*鼠标样式-白手套点击*/
  outline: none;
}
li{
  list-style: none;/*用来消除li列表前面的小点点*/
  cursor: pointer;
}
/* 清除浮动 */
.clearfix::after{
  content: "";
  display: block;
  height: 0;
  clear: both;
}
body{
  min-width:1200px;
  margin:auto;
  font-family: 微软雅黑
}
.op{opacity: 0}/*不透明*/
ul, li, p, h1, h2, h3, h4, h5, h6{
margin: 0;
padding: 0;
list-style: none;
}